Method for controlling a drive unit of a motor vehicle

• Main Authors: ERBGUTH CARSTEN, KRAEMER GERD, GRAMER FLORIAN, FRONT MATHIEU
• Format: Patent
• Language: English
• Published: 26.02.2013
• Subjects: CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT; TRANSPORTING; VEHICLES IN GENERAL

A method is provided for controlling a drive unit of a motor vehicle with an automatic or automated transmission. The drive unit includes at least one drive motor, which generates a drive torque in an overrun mode. The drive torque acts as a drag torque or as a creep torque on the drive wheels as a function of the current speed. The level of the drive torque in the overrun mode can be at least partially controlled by actuating a brake pedal. The drag torque applied to the drive wheels in the overrun mode can be controlled by actuating the brake pedal in such a way that a reduced drag torque dependent on the actuation of the brake pedal is applied to the drive wheels.